Electric-arc lamp



3 Sheets-Sheet l.

(No Model.)

C. J. VAN DEPOELE. ELEGTRG ARG LAMP. No. 291,658. Patented Jan. 8, 1884.

Illl

NVENTOR ATTORNEY- (No Model.) 3 Sheets-'Sheet 2.

C. J. VAN DEPGl-"J'Jlh ELEGTRIG A80 LAMP.

180.291.858. P8tente88811-8, 1884.

WITNESSES:

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(No Model.) 3 Sheets-Sheet G. J. VAN DEPOELE.

ELECTRIC ARC LAMP.

Patented Jen. 8, 1884. Figs-;

d f R WITNESSBS: INVBNTOR N. S'ETERS. Phobmmagqphw. washmgxon. n c.

Unirse @raras Parana* CHARLES J. VAX DEIGELE, OF @Hlth-IGC, Il'iLINtl.

ELCTRiC-ARC LAM P.

SPECIFICATON forming part of Letters Patent No. 291,653, dated "sanary 23, 13S/i.

Application filed October 1.5), lSB. (No model.)

To @ZZ 'whom it 71mg/ concern:

Be it known that I, CHARL is J. TAN De POELE, aeitizen of the United States of America, residing at Chicago, in the countyof Cook and State of Illinois, have invented certain new and useful Improvements in Electric-Arc Lamps, o1' which the following is a specification, reference being had therein to the accompanying drawings.

My invention relates to that class ot' eleetric lamps which are usually styled arclamps 5 1" and it consists in certain novel details of construction and arrangement, as will be fully hereinafter described.

In the accompanying drawings, which form a part of this specification, Figure I is an elevation of my lamp with the front of the in closing top case removed to show the working parts. Fig. 2 is an inverted plan View, showing the relative positions of the working parts. Fig. 3 is a detached plan view ot' the lifter. Fig. 4 is a diagrammatic view ofthe vibrating device, and it also shows the connections between the main and shunt magnets andthe relative positions ot' the several parts.

Similar letters denote like parts.

In the drawings, A is t-hc lower, I3 the upper, carbon 5 C, the lower-carbon holder, I), the lower metallic frame, E the upper one, forming or supporting aninclosing-case around the feeding devices placed therein, and although both trames form rigid construction mechanically, they are electricallyT disconnected inthe usual way at (t a or other suitable points. Inelosed in the upper case, and placed in symmetrical positions in relation to the upper arbons, are the two electro-magnets F and G, provided with the armature II, which is hinged at b and connected with the other end at c by a link, I, to thelifterJ. ThislifterJ is hinged to the support d, and its construction is as t'ollows: It consists of two like halves ljoined on the under side by an elastic plate'or strap, c, riveted or otherwise secured thereto. tach of the inner ends of thc two parts has a halt1 circular enlargement, forming with the elastic plate a circular clamp adapted to hold or release the upper carbon, in the manner herein after described.

K K. are adjListing-screwsstopping the downward movement ot' the lider. when not in operation, .I being hinged at d, one half ofit will naturally drop down on adjusting-screw K, and the other half will drop down on ad- `iustingscrew l/,which stands somewhat lower than K, and in this position, the jaw being opened, allows the upper carbon to drop down upon the lower carbon, but as soon as thelifter .I is raised from its resting position the jaws close with the upper edge uponthe carbon and hold it fast, carrying it upward with it.

L is a coil of fine wire, wound upon the core M and mounted upon the insulated base O.

R and R are two vibrating armatures, regulated by set-screws fandf/ passing through posts g and g.

Electrical connections are established as follows: l? and N are the two posts to which the wires from the battery or dynamo-machines are connected. The current, entering at I), passes through the upper frame to the top or positive carbon, then down said carbon to the lower one, hence tolower iframe. it is carried by a proper electrical connection to a point marked (5, where it enters through the upper frame and is carried to the electro magnet F, comes out ol" said magnet on the inner side, and passes over to magnet G, and from there to the negative pole X, and thereby completes the circuit. It will be seen that the lirst or starting circuit olthe'lamp is from the framel to the upper carbon, to the lower carbon, to the frame I3, through the connections at 6, to both of the magnets F and (t, and out through the negative pole X. The further connections are made as follows: From lextends a conductor, which passes to a piece of the magnet-frame at 2, which is in metallic contact with the magnet-core 3l'. From the core M, at the point l, the current passes (when the circuit is completed.) to the vibrating ar1nature R at the point 3, thence through wire 5, which connects with the main conductor at a point in advance ol' the main or carbon-controlling magnets F and G. rlhe vibrating and fixed points 3 and i never make permanent contact, and this 'bypass circuit through them. being of low resistance. causes the current iiowing through the said main magnets to pulsate in accordance with the interruptions between the points 3 and l, the main magnet being shertcireuited every time the vibrating From there IOC armature and core M come together. The shunt-magnet L, of high resistance, is energized by a current that is caused to pulsatc or be interrupted as hereinafter described, and the said current is established between the two poles of the lamp as follows The inner wire of thc coil L of said magnet is electrically connected to the frame at or near the positive bindingpost at 7. Thcnce it passesto said coil at 8, out at 9, thence to vibrating circuit-interrupting armature R at 10, thence through adjustable contact-screw j' to post g at 11, and is brought to the main circuit at 12, whence it passes to the negative binding-post N. The vibrations of the armature R alternately make and break the above-described circuit, from which it will be seen that thc instant both the said armatures R It touch the core M the main magnets are shortcircuited and almost entirely demagnetized, releasing the uppercarbon-holding devices, while at the next instant the shunt-circuit is interrupted, the enfergy of the main magnets restored, and the descent of the carbon stopped.'i By the use ofthe adj Listing-screws f j, theseinterruptions may be made to occur simultaneously, or with greater frequency, in either one or the other of the aforesaid circuits, so that the upper carbon will descend with a shaking motion, which, to secure steadincss in the light, must be practically continuons.

Having described the different parts of my lamp and the various electric connections, I now proceed to explain its operation.

As soon as electric connections with the source is established the magnetic cores F and AG lift up the armature H and at the same time the lifter J, which has to partake in all its movements, and tl1e`latter, clamping the upper carbon, raises the same from its contact with the lower one, and thus establishes the arc; but soon the carbons will wear away, so that it is necessary to feed the same down as fast as consumed, and this has to be done as nicely as possible in order to produce a steady light. New my device begins to operate as follows: The vibrating system, being electrically connected, will vibrate quietly and evenv ly at first-that is, as long as the cai-bons are at their proper distance apart; but as the distance increases the increased amount of current shunted through the fine-wire coil L causes the vibrations to become more energetic, and now it is that the second vibrating armature, It', comes into action. This armature R will vibrate isochronously with the one marked Iaintil its vibrations are energetic enough to make it (the vibrating armature RQ) strike the core M. This contact allows the current to be diverted from the magnets F G proper working of the vibrating armatures R R may be obtained by using a stiffer spring to support them, by placing them a greater distance from the core, or in any other desired manner.

I make no claim in this case to the lifter J, made in two parts, which are united by a spring-connection, as that forms part of the subj cet-matter of another application, filed December 15, 1881, Serial No. 47,963, of which this is a division, nor to an electric-arc lamp having a movable carbon-carrier, a feed regulating and adjusting device for the same, and means adapted to produce avibratory motion upon the feed mechanism for causing it to feed the movable carbon, which also forms part of the subject-matter .of the same application.

1. In an electric-.are lamp, the electro-inagnets F G, located in the main circuit, and pro vided with an armature, H, hinged at one end to one of the poles of said electro-magnet, the free end thereof coming in close proximity to the other pole, where it is free to move in a radius prescribed by the center ofits articulation to the opposite pole ot' the said electro-magnet, in combination with the clamping meclr anisln carried and operated by said hinged armature, substantially as described.

2. In an electric-arc lamp, the combination of the magnets F G, located in the main eircuit, the armature H, lifter J, and suitable carbon-holder, with the coil L, of relativelyhigh resistance, located in ashunt around said main magnets, the vibrating armatures R R', and adjusting devices and connections, substantially as described, between said main and shunt circuits, as set forth.

In an electric-arclamp, the flexible lifter J, in combination with ad) Listing-screws K K, adapted to be set at different heights, and thereby to forcibly open the descending clutch, substantially as set forth.

In testimony whereof I aftlx my signature, in presence of two witnesses, this 5th day of October, 1883.

CHARLES J. VAN DEPGELE.

Ii t nesses':

X. T. GAssn'r'rE, Trino. l?. BAILEY.

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